The following images were found in Dietrich’s archives and were from Mr. Al Rickli

A Sempert & Krieghoff sidelock Neptune Drilling no. 11063 proofed in 1927 in 16 x 16 x 8/57JR

 

S. & K. no. 11063
Sempert & Krieghoff Sidelock Neptune Drilling no. 14032 proofed in 1930 in cal. 16 x 16 x 8/72R
S. & K. no. 14032
Sempert & krieghoff Neptune Drilling no. 200506 proofed in 1938 in cal. 12 x 12 x 8/57JR

 

S. & K. no. 200506
Sempert & Krieghoff Neptune side lock drilling no. 13750 in 20 ga. x 20 ga. x 7/57R with game scene engraving, detachable trigger group and clam shell type action, proofed in 1929
S. & K. no. 13750
S. & K. no. 13750
Sempert & Krieghoff Neptune standard serial no. 19106 in 16 ga. x 16 ga. x 7/57R proofed in 1939
S. & K. no. 19106
S. & K. no. 19106

The following image is courtesy of James D. Julia Auctions.

The following images are courtesy-